tthall7188 tthall7188
  • 04-04-2018
  • Chemistry
contestada

What is the oxidation number of chromium in k2cr2o7?



1.



+12

2.



+2

3.



+3

4.



+6?

Respuesta :

WaleMaths
WaleMaths WaleMaths
  • 05-04-2018
K₂Cr₂O₇

(+1*2) + (x*2) + (-2*7)

2 + 2x - 14 = 0
2x - 12 = 0

2x = 12

x = 12/2

x = +6...
Answer Link

Otras preguntas

THE EXPRESSION (TAN THETA) (CSC THETA) IS EQUAL TO?
Each verb below, one noun does not go with it. Which one? 1/ discover ( the truth, a cure, DNA, gold ) 2/ make ( cars, a discovery, a phone call ) 3/ tell ( hel
Write in function form X+y=6..?
which of the following organisms feeds on the largest variety of producers
what planet starts with e?
at what point do scientists classify an area's weather as its climate? 1 year ,5 years ,15 years or 30 years
What is adaptation in animals and plants
Which of the following is x⁴ + y⁴ identically equal to? (A) (x² + y²)(x + y)(x - y) (B) (x² + xy + y²)(x² - xy + y²) (C) (x² + √2xy + y²)(x² - √2xy + y²) (D) (x
What is adaptation in animals and plants
Describe what happens when blood in capillaries flows past cells